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tr.v. sus·tained, sus·tain·ing, sus·tains
a. To keep in existence; maintain, continue, or prolong: sustain an effort.
b. To keep up (a joke or assumed role, for example) competently.
a. To supply with necessities or nourishment; provide for: the income needed to sustain a family.
b. To support the spirits, vitality, or resolution of; encourage: We were sustained by her unflagging optimism.
3. To support from below; keep from falling or sinking; prop: The beams sustain the weight of the roof.
a. To bear up under; withstand: can't sustain the blistering heat.
b. To experience or suffer: sustained minor injuries.
5. To affirm the validity of: The judge has sustained the prosecutor's objection.
A capacity of a musical instrument to continue the resounding of a note or tone.

[Middle English sustenen, from Old French sustenir, from Latin sustinēre : sub-, from below; see sub- + tenēre, to hold; see ten- in Indo-European roots.]

sus·tain′er n.
sus·tain′ment n.


(Astronautics) a rocket engine that maintains the velocity of a space vehicle after the booster has been jettisoned
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sustainer - someone who upholds or maintainssustainer - someone who upholds or maintains; "firm upholders of tradition"; "they are sustainers of the idea of democracy"
admirer, booster, protagonist, supporter, champion, friend - a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
moteur de croisière
References in periodicals archive ?
Its normal range is 5000 metres, but this can be boosted to more than 7000 metres by adding a sustainer motor.
The Bible shows that God is the giver of life and the sustainer of life,'' Powell said.
We should all open our hearts and minds to the reality that God Almighty, who is known as Allah in Arabic, is the Creator, Sustainer, Giver of life and death, and to Him everyone will return," he said.
Members who sign up to receive email will also begin the welcome series of emails from the charity, which includes a sustainer pitch for donors.
It is a position based on faith in a creator sustainer God.
Additionally, she is a member and past parliamentarian of the National Charity League Memorial Chapter, sustainer for Junior League of Houston, rising star committee chairman of Texas Executive Women, and volunteer pro bono mediator for the Harris County Dispute Resolution Center.
Recipients also were hit up for a donation, though the ask varied based on previous behavior: If a recipient had not renewed, they would get a renewal ask; if they did renew, they would get a sustainer ask; and, if they were not a member, they were asked to join.

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